Cowbird Moms Choose Nests Carefully (IMAGE)

University of Illinois at Urbana-Champaign, News Bureau

Cowbird Moms Choose Nests Carefully

Caption

Cowbird moms pay attention to the size of eggs in the nests they choose for egg-laying, a new study finds. Inset: Two cowbird eggs in the nest of a northern cardinal, with two (larger) eggs of its own.

Credit

Photo by Loren Merrill; Inset photo by Scott Chiavacci

Usage Restrictions

Photo may be used only to accompany stories about the research described in this release. Credit required: Photo by Loren Merrill; Inset photo by Scott Chiavacci

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